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<?php
session_start();
$_SESSION['hall_id']=$_REQUEST['放映厅'];
echo "已选择的放映厅：".$_SESSION['hall_id']."<hr>";
$hall_id=$_SESSION['hall_id'];
$conn=mysqli_connect('127.0.0.1','root','123456','tpp');
$sql_txt="select film_date,film_date_time from film_times where hall_id='$hall_id' group by film_date";
$result=mysqli_query($conn,$sql_txt);
echo "<br>选择日期：";?>
<form action="select_time.php" method="get">
    <select name="date" >
        <?php
        while ($info=mysqli_fetch_array($result)){
            $film_date=$info['film_date'];
            echo "<option value='$film_date'>$film_date</option>";
        }
        ?>
    </select>
    <input type="submit">
</form>
</body>
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